In which type of steering system would you find the worm gear?

In a re-circulating ball steering system, the worm gear is an essential component designed to convert the rotational motion of the steering wheel into lateral movement that turns the vehicle's wheels. This type of steering system incorporates a gear mechanism with a worm gear wrapped around a screw, which allows for smooth and precise steering input with minimal effort.

The design enables the balls to roll between the worm and the nut, reducing friction and wear while facilitating a more efficient transmission of force from the steering wheel to the steering linkage. This design is particularly advantageous for larger vehicles or those requiring greater steering precision, as it provides a stable and responsive steering feel.

In contrast, rack and pinion steering utilizes a different mechanism involving a flat gear (the rack) and a circular gear (the pinion) and does not incorporate a worm gear. Power steering refers to the assistance provided to the steering mechanism, typically using hydraulic or electric means, while hydraulic steering is specifically focused on systems that employ hydraulic fluids to assist in steering without necessarily relying on a worm gear design. Thus, the presence of the worm gear uniquely identifies the re-circulating ball steering system.